Results 11 to 20 of about 596,856 (273)

The outer rotation curve of the Milky Way [PDF]

open access: yes, 1996
A straightforward determination of the circular-speed curve vc(R) of the Milky Way suggests that near the Sun, vc starts to rise approximately linearly with R.
Binney, James, Dehnen, Walter
core   +2 more sources

Channels with block interference [PDF]

open access: yes, 1984
A new class of channel models with memory is presented in order to study various kinds of interference phenomena. It is shown, among other things, that when all other parameters are held fixed, channel capacity C is an increasing function of the memory ...
McEliece, Robert J., Stark, Wayne E.
core   +1 more source

Basic reproduction number and effective reproduction number for North Cyprus for fighting Covid-19

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2020
The aim of this paper is to show how North Cyprus fought with Covid-19 by using R0 and Rt, as herd immunity. For that purpose, we used a SEIR model for basic reproduction number, R0, and calculated Rt values by using R0 values. North Cyprus is the first
Evren Hincal   +2 more
doaj   +1 more source

Global Stability of an SIR Epidemic Model with Delay and General Nonlinear Incidence [PDF]

open access: yes, 2010
An SIR model with distributed delay and a general incidence function is studied. Conditions are given under which the system exhibits threshold behaviour: the disease-free equilibrium is globally asymptotically stable if R0 \u3c 1 and globally attracting
McCluskey, C. Connell
core   +2 more sources

Wind Turbine Aerodynamic Performance by Lifting Line Method

open access: yesInternational Journal of Rotating Machinery, 1998
The vortex model of propellers is modified and applied to the high-speed horizontal axis turbines. The turbine blades are replaced by lifting lines and trailing vortices which shed along the blade span. The model is not a free wake model, but it is still
Horia Dumitrescu, Vladimir Cardos
doaj   +1 more source

Complexity of the Basic Reproduction Number (R0)

open access: yesEmerging Infectious Diseases, 2019
The basic reproduction number (R0), also called the basic reproduction ratio or rate or the basic reproductive rate, is an epidemiologic metric used to describe the contagiousness or transmissibility of infectious agents.
Paul L. Delamater   +4 more
doaj   +1 more source

A systematic review of margin status in retroperitoneal liposarcomas: Does the R0 margin matter?

open access: yesFrontiers in Oncology, 2022
Retroperitoneal liposarcomas (RPLPSs) are a rare tumor group for which current guidelines recommend aggressive en bloc resection to attain microscopically negative (R0) margins.
Benjamin Paik   +26 more
doaj   +1 more source

Estimation of the basic reproductive number and mean serial interval of a novel pathogen in a small, well-observed discrete population [PDF]

open access: yes, 2016
BACKGROUND:Accurately assessing the transmissibility and serial interval of a novel human pathogen is public health priority so that the timing and required strength of interventions may be determined.
Riley, S, Wu, KM
core   +2 more sources

Global Stability for an SEIR Epidemiological Model with Varying Infectivity and Infinite Delay [PDF]

open access: yes, 2009
A recent paper (Math. Biosci. and Eng. (2008) 5:389-402) presented an SEIR model using an infinite delay to account for varying infectivity. The analysis in that paper did not resolve the global dynamics for R0 \u3e 1.
McCluskey, C. Connell
core   +2 more sources

Filters of R0-algebras

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
The notion of fated filters in R0-algebras is introduced. Characterizations of (fated) filters are given. A filter generated by a set is established. By introducing the notion of finite ⊙-property, we show that if F is a nonempty subset of an R0-algebra ...
Young Bae Jun, Liu Lianzhen
doaj   +1 more source

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